信噪比

Firstly, the multi-user detector that relatively integrity in theory and proximal to optimal multi-user detector is discussed and Decor elating Detector, Minimum Mean Square Error Detector, Optimal linear Detector together with the multi-capability indexes output energy, SNR, bit error rate, asymptotic efficiency, convergence etc.

本文首先对理论上及性能上接近最佳多用户检测的次最佳多用户检测进行理论研究，计算并分析了解相关检测器、最小均方误差检测器、最佳线性检测器的性能指标(输出能量、信噪比、渐近有效性、误码率以及收敛特性等)。

To compare the image quality of the three sequences in two groups by One-Way ANOVA and T Test. The qualitative assessment standards include clarity, artifacts, signal uniformity, the conspicuity of enhanced vein and the observable grade of intrahepatic venous branchs. The quantitative assessment standards include SNR and CNR of intrahepatic portal vein and hepatic veins. Furthermore, the anatomy and variations of the intrahepatic portal vein and hepatic veins are statistical analysed.

通过方差分析和T检验分别对A、B组三个序列的图像质量进行比较，评定标准包括清晰度、伪影、信号均匀性、静脉强化程度及肝内静脉分支显示级数等定性指标和肝内门静脉、肝静脉的SNR(Signal-Noise Ratio，信噪比)及CNR(Contrast-Noise Ratio，对比度噪声比)等定量指标。

The modified electrode showed an attractive electrocatalytic ability and could enhance the current response of electro-active molecules by employing potassium ferricyanide, as...

在最佳条件下，应用微分脉冲伏安法检测，鸟嘌呤碱基的氧化峰电流与ssDNA的浓度在40μg·L-1-5.0mg·L-1范围内呈现良好的线性关系，检测限为5μg·L-1(S/N=3，信噪比)。

National acoustic laboratories, 126 greville street, nsw 2067, australia objective to obtain the slope and srt of the p-i function for mandarin short sentences in 4-talker babble noise, and evaluate/adjust the homogeneity all sentences individually.

目的 获得嘈杂语噪声背景下汉语短句识别率-信噪比（performance-intensity， p-i）函数的斜率和50%的得分所对应的信噪比(记为snr50)，并对所有短句的同质性进行评估和调整。

National Acoustic Laboratories, 126 Greville Street, NSW 2067, Australia Objective To obtain the slope and SRT of the P-I function for Mandarin short sentences in 4-talker babble noise, and uate/adjust the homogeneity all sentences individually.

目的 获得嘈杂语噪声背景下汉语短句识别率-信噪比（Performance-Intensity， P-I）函数的斜率和50%的得分所对应的信噪比(记为SNR50)，并对所有短句的同质性进行评估和调整。

A new set of appraisal system for the qualities of image enlarge is proposed with farther research based on gray scale,ratio of signal to noise,mean square error and absolute value of gradient.

进一步从灰度偏移、信噪比、均方误差和梯度模值4个方面，提出了一套衡量图像放大质量的评价体系。

Signal to Noise Ratio: The ratio of the signal to the random noise in a set of data.

信噪比：平均到一个数据单元的信号与随机噪声的比值。

Multicollinearity ; condition index ; variance decomposition proportion ; signal-to-noise ratio ; partial ridge estimator

复共线性；条件指标；方差分解比；信噪比；部分岭估计

The experimental results show that the proposed method can obtain good performance in terms of both objective evaluation criteria such as root-mean-square error,signal-to-noise ratio,mean error and visual subjective evaluation criteria.

实验结果表明，无论是依据均方根误差、信噪比、灰度平均误差等客观评价标准，还是视觉的主观评价，所提出的融合方法都能取得较好的性能。

Hanna: That's over now, isn't it?

都结束了，对吗

You must be ill. You look so pale.

你一定是病了，你的脸色苍白。